C CARRASCO1 2, L KEENEY 1 2, T J NAPIER-MUNN2, P BODE1
PRESENTED AT COMMINUTION ’16, MINERALS ENGINEERING INTERNATIONAL, PUBLISHED IN MINERALS ENGINEERING VOLUMES 103-104, BARRY WILLS (ED), APRIL 2017.
ABSTRACT
Grade Engineering® comprises a range of techniques aiming to reje...
18-Jul-2017
Bridging the gap: Understanding the economic impact of ore sorting on a mineral processing circuit
J Lessard (1), W Sweetser (1), K Bartram (2), J Figueroa (1) and L McHugh (1)
ABSTRACT
Automated, continuous ore sorting is a mature technology that has only been used to a limited extent...
26-May-2017
Technical Review and Evaluation of Ore Sorting Technology Incorporating Results from Four Properties
B Hilscher (1), P Nayak (1) and N Yoon (1)
49th Annual Canadian Minerals Processors Conference Proceedings, Ottawa, Canada, 2017.
ABSTRACT
The mining industry is currently facing chal...
26-May-2017
Comminution Circuit Design Considerations
G Lane (1), B Foggiatto (1), R Braun (1), M P Bueno (1), P Staples (2) and S Rivard (2)
49th Annual Canadian Minerals Processors Conference, Ottawa, Canada, 17-19 January 2017
ABSTRACT
This paper demonstrates the selection of grinding circui...
26-May-2017
Breaking Down Energy Consumption in Industry Grinding Mills
J Bouchard (1), G LeBlanc (2), M Levesque (3), P Radziszewski (4) and D Georges-Filteau (1)
49th Annual Canadian Minerals Processors Conference, Ottawa, Canada, 2017
ABSTRACT
Grinding mills are infamous for their extremely...
26-May-2017
The Effect of Choke Feeding a Gyratory Crusher on Throughput and Product Size
J -F Dupont (1), J McMullen (1) and D Rose (2)
49th Annual Canadian Minerals Processors Conference, Ottawa, Canada, 2017
ABSTRACT
The Detour Lake mine is located 200 km northeast of Timmins, Ontario, Canada...
26-May-2017
Optimisation of installed mill power post-installation of secondary crushing circuit at Northparkes Mines.
Y Sulianto, T Trott, D Morgan, T Bell, F Kock and B G Putland
AusIMM Mill Operators Conference 2016
ABSTRACT
Northparkes installed and commissioned a secondary crushing circui...
26-Apr-2017
The transition from semi-autogenous to autogenous milling at Waihi Gold
C Haines and D Bertoldi
AusIMM Mill Operators Conference 2016
ABSTRACT
The Waihi Gold Mine (WGM) operated by OceanaGold New Zealand Limited is a wholly owned subsidiary of the OceanaGold Corporation of Australi...
26-Apr-2017
Grinding circuit practices at Newmont
A Giblett and S Hart
AusIMM Mill Operators Conference 2016
ABSTRACT
In 2015 operations under the ownership and/or management of all Newmont Mining Corporation subsidiaries (Newmont) produced 5.7 Moz of gold and 619 Mlb of copper from mining opera...
26-Apr-2017
Upgrading low-grade gold ore stockpiles by preconcentration using ore sorting – an assessment of the economic impact and viability.
A N Parry and G van Wyk
Mill Operators Conference 2016
ABSTRACT
Sensor based automatic ore sorting technologies are used in the minerals industries to efficiently...
26-Apr-2017
Design, installation, commissioning and operation of fine grinding technology at the Kevitsa Mine
B Nielsen, H Lehto & B Musuku
AusIMM Mill Operators Conference 2016
ABSTRACT
The demand for fine and ultra-fine grinding associated with the processing of more challenging, finer gra...
26-Apr-2017
G Harbort and D Zoetbrood
ABSTRACT
The Phu Kham copper-gold operation in the Laos People’s Democratic Republic (PDR) is owned and operated by Phu Bia Mining Limited. PanAust Limited holds a 90 per cent interest in Phu Bia Mining Limited, with the remaining ten per cent held by the Laos PDR Gov...
15-Feb-2017
Abstract
The comminution energy curve is a profoundly simple graphical technique that displays detailed operating efficiency information for industrial comminution processes. The database underlying the methodology has recently more than doubled, to now contain a substantial fraction of the interna...
31-May-2016
Abstract
The Dumont deposit is a large (1,179 Mt proven and probable reserve) low grade (0.27% nickel) nickel sulphide project located in the Abitibi region 25 km west of Amos, Quebec. Royal Nickel Corporation acquired the project in 2007 and has since taken the project from a scoping study in 20...
08-Apr-2016
Abstract
AngloGold Ashanti was an early adopter of High Pressure Grinding Roll (HPGR) technology at both Tropicana Mine and the Gramalote Project. The increased energy efficiency achieved by HPGRs through confined bed breakage has been extensively researched in small scale tests, but slow industry...
01-Apr-2016
Abstract
The Detour Lake mine is located in north-eastern Ontario, approximately three hundred kilometres north-east of Timmins and 185 kilometres by road north-east of Cochrane.
The mill processes a free milling gold ore using both gravity circuit and leaching with a state of the art carbon-in...
20-Mar-2016
Abstract
The slurry level in AG/SAG and ball mills has an influence on their power draw, which in some instances can be profound. This is particularly the case with so-called slurry pooling in AG/SAG mills which can result in significant lowering of power draw. From a predictive viewpoint there are...
19-Feb-2016
ABSTRACT
In 2012, a single module heavy medium cyclone plant (HMP) was installed at the Glencore Zinc’s (then Xstrata Zinc) McArthur River lead zinc mine. The HMP formed the first part of the MRM Phase 3 Project to increase run of mine (ROM) capacity from 2.4 to 5.5 Mt/a.
The purpose of the HMP...
17-Feb-2016
Abstract
Declining ore grade, leading to increased material transport and plant throughout requirements, is one of the major challenges in the current mining environment. This is accompanied by rising energy and labour costs, decreasing plant productivity and the requirement for highest plant avail...
20-Jan-2016
SAG 2015
A simple strategy is required for assessing the efficiency with which comminution circuits apply energy to achieve size reduction. A coherent methodology has been developed, based on well established theories, to graphically identify the opportunities for process improvement and the pote...
03-Jan-2016
ABSTRACT
The Kansanshi copper ore body consists of distinct sulphide and oxide zones as well as a variable transitional zone containing both oxide and sulphide minerals which is referred to as the mixed ore zone. All three ores exist in exploitable quantities for the life of mine. The impact and...
02-Dec-2015
ABSTRACT
PT Newmont Nusa Tenggara – Batu Hijau site mine to mill program has been systematically improved and resulting in Geo-Metallurgical detailed ore characteristics is successfully being used for short and long term business planning and mill throughput predictions. Actual plant operating an...
30-Nov-2015
ABSTRACT
The benefits of pre-concentration using sensor-based sorting have been widely reported with the greatest potential impacts on low grade and high tonnage operations such those mining copper porphyry deposits. Due to the non-selective nature of bulk surface mining methods, significant quan...
25-Nov-2015
ABSTRACT
Blasting plays a major role in the fragmentation of rock in open pit mining, which is then crushed and processed before the final product is obtained. Tailoring the blasting method to suit rock mass characteristics can lead to significant improvements downstream. Mine to Mill is a method...
25-Nov-2015
Abstract
AngloGold Ashanti Ltd nominated Sunrise Dam Gold Mine as a case study via their involvement with the long-running Australian Mineral Industry Research Association (AMIRA) International P9P research program (AMIRA, 2015) . A group of researchers from the Global Comminution Collaborative (...
10-Oct-2015
ABSTRACT
In non-ferrous metal mining operations, it is generally necessary to crush and grind the ore to a very fine particle size to effectively liberate the contained mineral from the host rock. Fragmentation by blasting is the first stage of this comminution process. Numerous studies and indepen...
09-Sep-2015
ABSTRACT
Pre-concentration of precious metal and base metal ore types is becoming more relevant with the discovery, development and operation of many lower grade deposits around the world. The fluctuations in metal prices expose many mines to risks especially dealing with low and variable ore gr...
02-Jun-2015
Abstract
DRAMP was approached by the ARM/Lion Ore JV during July 2006 to conduct a feasibility study and Control Budget Estimate for a new Greenfield’s project for their NKOMATI Ni mine 45km east of Machadadorp. The scope included the evaluation and review of previous studies as well as a techno-...
17-Apr-2015
There are a lot of good reasons to manage energy use at mining operations. Optimizing process energy use reduces operating costs. Tracking energy use can help identify unplanned process changes or malfunctioning equipment early, which allows problems to be corrected promptly.
Sacré-Davey Engineer...
03-Apr-2015
Orway Mineral Consultants Ltd (OMC) as a consultancy has specialized in comminution circuit design for over 30 years. The OMC Power Model is OMC’s in-house software for specific grinding energy power-based circuit calculations. The model uses ore hardness parameters from testwork, circuit configurat...
03-Apr-2015
Niobec has been using vibrating screens and screw classifiers as a double stage classification in its grinding circuit since the very beginning of its operation in St- Honoré. Most of the other mineral processing plants around the world uses cyclones as the classification device in their grinding ci...
03-Apr-2015
New Gold Inc.’s New Afton concentrator commenced operation in June 2012, producing a copper-gold-silver concentrate. During the first two years of operation, various optimization efforts have improved mill throughput, recoveries and concentrate grade. Daily mill throughput has increased 20% above th...
03-Apr-2015
Abstract
Optimisation and better control of milling circuits require extensive modelling of milling data. This paper extends the enquiry to the use of the attainable region (AR) technique to determine the optimal residence time of ore in a ball mill. It also evaluates the energy requirements of the...
03-Apr-2015
CMP 2015
Orway Mineral Consultants Ltd (OMC) as a consultancy has specialized in comminution circuit design for over 30 years. The OMC Power Model is OMC’s in-house software for specific grinding energy power-based circuit calculations. The model uses ore hardness parameters from testwork, circui...
02-Apr-2015
Traditional motors for milling technology has relied on either Wound Rotor Induction, Low Speed Synchronous Motors, or Asynchronous Induction Motors with mechanical gear reducers. A new alternative is now offered: The Low Speed Asynchronous Motor. This alternative provides the benefit of reduced com...
16-Mar-2015
Lake Shore Gold is engaged in commercial gold production at both the Timmins West and Bell Creek mines, located in Timmins, Ontario. Run of mine ore is processed at the Bell Creek mill which consists of a conventional gold mill flow sheet involving crushing, grinding, gravity concentration and carbo...
13-Mar-2015
Taseko Mines Limited Gibraltar copper-molybdenum mine recommenced operation in 2004 with the initiation of a series of development projects to increase throughput capacity as well as modernize the mine.
In the second staged development project, a VTM- 1250-WB regrind mill was selected to replace...
13-Mar-2015
Recent copper price evolution pushes modern mining industry even harder to achieve highest production with maximum efficiency. Operations are bound by numerous contractual and environmental conditions that bring a high degree of complexity to both the operators controlling the process and the plant...
13-Mar-2015
The Functional Performance Equation for ball milling circuits provides plant staff with a new means to improve circuit performance. However, successful execution of a plant processing performance improvement project, with verifiable improvements, requires a significant number of accompanying steps b...
13-Mar-2015
ABSTRACT
Copper Mountain’s concentrator was commissioned in May 2011. The circuit consists of a 34’ x 20’ EGL SAG mill, a Raptor 900 pebble crusher and two 24’ x 39’6” ball mills. Each mill is equipped with a 2 x 8500 HP dual pinion drive system. The plant was designed to process 1585 mtph of SAG...
03-Feb-2015
SABC circuits have gained widespread attention within China, and are being gradually applied to many mines. However the domestic knowledge of commintion process is still relatively basic, and the design and production management of the application of SABC technology lack guidance of scientific theor...
06-Dec-2014
In recent years, DEM ( discrete element method) software, along with 3D laser measuring equipment, have become powerful tools to describe mill charge behavior, as well as forces acting on the liners of SAG mills. With the aim of contributing to streamline this application of the advanced technologie...
06-Dec-2014
EEO program
Industry: Mining, minerals processing
Key driver for optimisation: Productivity
Improvement Focus: Process control
Location: Laverton, Western Australia Product(s): Gold
Cost to implement: NA
Annual Savings: NA
Payback Period: NA
Employees: 500
Energy sources: natura...
04-Dec-2014
Industry: Mining, minerals processing
Key driver for optimisation: Productivity
Improvement Focus: Process control
Location: Laverton, Western Australia Product(s): Gold
Cost to implement: NA
Annual Savings: NA
Payback Period: NA
Employees: 500
Energy sources: natural gas and diese...
04-Dec-2014
Case Study Snapshot
Industry: Mining
Energy Management System (EnMS) guidance/standard: CAN/CSA-ISO 50001
Key driver for EnMS: Cost reduction
Improvement focus: Energy efficiency for mine production and operations
Location: New Afton Mine, Kamloops, British Columbia, Canada
Product(s): Gold an...
04-Dec-2014
Abstract
Ore sorting technology represents a step-change improvement in eco-efficient comminution strategies. Sorting equipment offers the benefit of greatly reducing the comminution energy required per tonne of mineral processed by identifying stones that contain ore and separating them from sto...
02-Oct-2014
Whittle Consulting’s (WCL) Enterprise Optimization (EO) solution is an integrated approach to maximizing the Net Present Value (NPV) of a mining business by simultaneously optimizing up to 10 different mechanisms across the mining value chain. The EO methodology which WCL has developed over the last...
23-May-2014
CMP2013
The energy efficiency debate in comminution is an ongoing one, with several different points of reference. A recent award winning paper by Wang et al 2013, adds to this debate by addressing process, energy and cost efficiency. The paper won the Coalition for Energy Efficient Comminution (...
17-Mar-2014
Metallurgical Plant Design and Operating Strategies 2004
Oceana Gold (New Zealand) Limited operates the Macraes Gold Mine near Dunedin on the South Island of New Zealand. The ore body is mineralogically complex and comparatively low grade requiring a series of unit processes and resulting in a re...
22-Oct-2004
Comminution 1998
This paper presents observations made during the conduct and analysis of eleven separate autogenous and semi-autogenous pilot plant trials. These trials were conducted using different ores for various projects over the past five years. The ores tested include relatively competent...
22-Nov-1998